Engine / Reverse differential gear -
5
A.Troubleshooting.
a.Compression pressure is too low, difficult to start engine and engine running
unsmoothly.
1.Cylinder head gasket cracked.
2.Spark plug is not well locked.
3.Piston ring worn out or cracked.
4.Cylinder, piston worn out.
5.Reed valve is out of order.
b.Compression pressure is too high; Engine overheating; abnormal noise.
1.piston tip has too much carbon accumulated.
c.Abnormal piston noise
1.Cylinder and piston worn out.
2.Piston pin hole or Piston pin worn out.
3.Connecting rod small end or bearing worn out.
d.Abnormal piston or cylinder noise
1.Piston ring worn out or cracked.
2.Cylinder worn out or cracked.
B.The operation notice
1.
Clean before operation to avoid particles dropping into the engine.
2.
The contact surface of gasket must be clean.
3.
Dismantle cylinder and cylinder head by screw driver. Do not injure the contact surface.
4.
Cylinder inner surface and piston outer face can’t be injured. Contact
Surface should lubricate by specified oil.
C.Data (Hooligan 170i)
Part name /description
Standard value( mm )
Limit of use( mm )
Bore
61.000~61.010
61.10
Curve
-
0.05
Cylindrility
-
0.05
Roundness
-
0.05
Clearance b/w Piston
and
Piston ring
lst ring
0.02~0.06
0.10
2nd ring
0.01~0.05
0.10
Clearance of cutting
section
lst ring
0.15~0.35
0.50
2nd ring
0.15~0.35
0.50
side ring
0.2~0.7
0.9
Piston outer diameter
60.980~60.960
60.90
Measuring location of piston outer dia.
Down to7.5mm from the piston skirt
---
Clearance b/w piston and cylinder
0.025~0.035
0.10
Piston pin hole inner dia
15.000~15.006
15.045
Piston pin outer diameter
15.000~14.994
14.960
Clearance between piston and piston pin
0.020~0.017
0.025
Connecting rod small end inner dia
15.010~15.028
15.060
110
